The maximum amount of time in seconds that the result of the callback query may be cached client-side. Telegram apps will support caching starting in version 3.14. Defaults to 0.

Unique identifier for the query to be answered.

If true, an alert will be shown by the client instead of a notification at the top of the chat screen. Defaults to false.

Text of the notification. If not specified, nothing will be shown to the user, 0-200 characters.

URL that will be opened by the user's client. If you have created a Game and accepted the conditions via @Botfather, specify the URL that opens your game – note that this will only work if the query comes from a callback_game button. Otherwise, you may use links like t.me/your_bot?start=XXXX that open your bot with a parameter.